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Commitments and contingencies - Legal Proceedings - Additional Information (Details)	Sep. 30, 2025 USD ($)
Minimum
Legal Matters And Contingencies [Line Items]
Loss Contingency Range Of Possible Loss Portion Not Accrued	$ 0
Maximum
Legal Matters And Contingencies [Line Items]
Loss Contingency Range Of Possible Loss Portion Not Accrued	$ 7,200,000

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- Definition

Legal Matters And Contingencies [Line Items]

+ References

No definition available.

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- Definition

The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

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